CN100403628C - Reversible motor - Google Patents
Reversible motor Download PDFInfo
- Publication number
- CN100403628C CN100403628C CNB028222318A CN02822231A CN100403628C CN 100403628 C CN100403628 C CN 100403628C CN B028222318 A CNB028222318 A CN B028222318A CN 02822231 A CN02822231 A CN 02822231A CN 100403628 C CN100403628 C CN 100403628C
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- China
- Prior art keywords
- windings
- winding
- reversible motor
- normal direction
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
Reversible motor including a stator comprising two windings (a-a', b-b'), a start apparatus (c-c') connected to one of the two windings (a-a', b-b') in series, switches (310,330,350) for providing power to the two windings selectively, wherein the switches, for reversing the motor, are connected selectively such that the direction of the current in said one of said two windings is reversed and said start apparatus is connected to the other one of said two windings in series, and a turn ratio and a cross section area ratio of said two windings being adjusted for a sufficient start torque and an optimal efficiency of said reversible motor.
Description
Technical field
The present invention relates to a kind of motor, and relate in particular to a kind of reversible motor that can be applicable to compressor.
Background technology
In general, single-phase, the single-phase induction motor that is generally used for compressor is provided with stator, rotor and working capacitor (running capacitor).
With reference to Fig. 1, Fig. 1 illustrates 1/4th of motor stator subdivision, and stator has slit 100 at fixing interval, and stator has two windings, and each winding twines tens times around slit.Connect for one in working capacitor and two windings.Rotor rotates under the effect in the magnetic field that is formed by stator.
Explain the system and the work of unidirectional motor with reference to Fig. 2.
With reference to Fig. 2, unidirectional motor is provided with two winding a-a ' and b-b ' and working capacitor.
An one end a of a-a ' winding and an end c of working capacitor are connected on the power supply.The other end c ' of working capacitor is connected on the end b of b-b ' winding.The other end a ' of a-a ' winding and the other end b ' ground connection of b-b ' winding.
Under the situation that sense of current is fixed in advance, provide electric current, make rotor rotate along required direction according to Fu Laiming (Flemming) left hand rule to two windings.In this case, the phase place of the electric current of the winding b-b ' of the flow direction and working capacitor series connection is than morning 90 ° of the winding a-a ' that is not connected working capacitor, thereby produce a starting torque by the formed magnetic field of the electric current that flows to the winding b-b ' that connects with working capacitor, and keep being rotated by the rotor of initial start by the formed magnetic field of the electric current that flows to the winding a-a ' that is not connected with working capacitor.Finally, the rotor of unidirectional motor rotates along a required direction under by the effect in the formed magnetic field of electric current that flows to two windings.
Working capacitor as a kind of starting device that is used for starting rotor can be replaced by switch, and perhaps the combination by working capacitor and switch replaces, although the principle of starting rotor and working capacitor is slightly different.
Simultaneously, winding ratio (pass the quantity of the lead of not connecting with working capacitor of part slit/pass the quantity of the lead of connecting with working capacitor of part slit) and sectional area ratio (the not sectional area of the winding of the sectional area of the winding of connecting with working capacitor/be in series with working capacitor) influence the starting torque of motor and the efficient of motor (merit of being done by motor/offer the energy of motor).The winding ratio of unidirectional motor and sectional area ratio are designed to be suitable for the unidirectional rotation of motor, and in other words, starting torque is enough for unidirectional rotation, and make the efficient maximum of motor.Usually, the winding ratio of unidirectional motor is set within the scope of 1.1-1.6, and sectional area ratio is set within the 1.44-2.56 scope.
Thus,,, carry out reverse rotation, so the motor of prior art has higher production cost, bigger volume and from the noise of mechanical device as clutch because the unidirectional motor of prior art needs independent mechanical device.
Summary of the invention
That is intended to address the above problem the object of the present invention is to provide a kind of reversible motor, and this motor can not have independent mechanical device, as under the prerequisite of clutch oppositely.
Another object of the present invention provides a kind of reversible motor, and this motor can provide best efficient and sufficient starting torque, even for the situation of reverse rotation.
In one aspect of the invention, purpose of the present invention can be achieved by a kind of like this reversible motor is provided, this reversible motor comprises the stator with two windings, be connected in series to the starting device in two windings, and the switch that is used for providing electric energy to two winding selectivity, wherein, switch optionally connects, make that the sense of current in the winding in two windings is reverse, and starting device is connected in two windings another, be used for making motor reverse, described two windings have the normal direction rotation winding ratio that falls in the 0.71-0.98 scope, and the reverse rotation winding ratio that rotates the inverse of winding ratio for normal direction.
In another aspect of this invention, provide a kind of reversible motor, it comprises: have the stator of two windings, each winding has one from its electrode of telling; With one of in two windings on a starting device that electrode is in series; And the switch that electric energy is provided to two windings and two electrode selectivity, wherein, the switch selectivity connects, make that the sense of current in one of two windings is reverse, and another electrode in two electrodes on starting device and one of two windings is connected, be used for making motor reverse, by regulating the branch location of two electrodes from two windings, normal direction rotation winding ratio and reverse rotation winding ratio can be regulated independently of one another.
Thereby reversible motor of the present invention not only can but also can rotate on normal direction in the opposite direction.
The present invention also provides a kind of positive displacement compressor with described reversible motor.
Description of drawings
Fig. 1 illustrates 1/4th of motor stator;
Fig. 2 illustrates the related art circuit of the stator among Fig. 1, and the winding and the working capacitor that are connected on the power supply are shown;
Fig. 3 illustrates the circuit of reversible motor according to an embodiment of the invention, and the winding and the working capacitor that are connected on the power supply are shown;
Fig. 4 A illustrates the circuit of the reversible motor among the Fig. 3 that switches to the normal direction rotation;
Fig. 4 B illustrates the circuit of the reversible motor among the Fig. 3 that switches to reverse rotation;
Fig. 5 illustrates the circuit of the reversible motor of another preferred embodiment according to the present invention, and the winding and the working capacitor that are connected on the power supply are shown;
Fig. 6 A illustrates the circuit of the reversible motor among the Fig. 5 that switches to the normal direction rotation; And
Fig. 6 B illustrates the circuit of the reversible motor among the Fig. 5 that switches to reverse rotation.
Embodiment
Below, describe an embodiment of reversible motor of the present invention with reference to the accompanying drawings in detail.
Fig. 3 illustrates the circuit of reversible motor according to an embodiment of the invention, and the winding and the working capacitor that are connected on the power supply are shown.
With reference to Fig. 3, reversible motor comprises: two winding a-a ', b-b '; Starting device; Three 3 type switches (three point type switch) 310,330 and 350 are used for selectivity and connect two windings and starting device; And the control device (not shown), be used for controlling three switches 310,330 and 350.Though starting device can be capacitor, switch or their combination, it is that the hypothesis of capacitor provides that description after this is based on starting device.Though control device can be control circuit or microcomputer, it is that this hypothesis of microcomputer provides that description after this is based on control device.
The one end c of the terminal 315 of switch 310, working capacitor and the terminal 358 of switch 350 are connected on the power supply.The other end c ' of working capacitor is connected on the terminal 335 of the terminal 318 of switch 310 and switch 330.The end a of winding a-a ' is connected on the terminal 311 of switch 310, and the end b of winding b-b ' is connected on the terminal 331 of switch 330.Terminal 355 ground connection of the terminal 338 of the other end of winding a-a ', switch 330 and switch 350.The other end b ' of winding b-b ' is connected on the terminal 351 of switch 350.
Situation in the time of will describing reversible motor along a direction (below be called normal direction) rotation.
In order to rotate reversible motor on normal direction, microcomputer is connected to the terminal 311 of switch 310 on the terminal 315, and the terminal 331 of switch 330 is connected on the terminal 335, and the terminal 351 of switch 350 is connected on the terminal 355.
Then, the winding of reversible motor and working capacitor are connected on the power supply shown in Fig. 4 A, make electric current flow to two windings along the direction shown in Fig. 4 A.Electric current flows and electric current mobile identical to a position of two windings of unidirectional motor stator shown in Figure 2 and working capacitor to a position of two windings of the reversible motor stator shown in Fig. 4 A and working capacitor, therefore, reversible motor rotates on normal direction.
To explain reversible motor along with a described side (below be called oppositely) situation of rotating in the opposite direction.
For along the reverse rotation reversible motor, microcomputer is connected to the terminal 311 of switch 310 on the terminal 318, the terminal 331 of switch 330 is connected on the terminal 338, and the terminal 351 of switch 350 is connected on the terminal 358.
Then, the winding of reversible motor and working capacitor are connected on the power supply shown in Fig. 4 B.So, shown in Fig. 4 B, electric current along from a to a ' direction flows in the winding a-a ' of reversible motor stator, and working capacitor is connected with winding a-a '.And electric current is along flowing among the winding b-b ' of reversible motor stator from b ' to the b direction.Fig. 4 B can compare with Fig. 4 A, can find that the sense of current in winding b-b ' is reverse, working capacitor is not connected on the winding b-b ', but be connected on the winding a-a ', wherein Fig. 4 A shows reversible motor flowing to two windings and a position of working capacitor when normal direction is rotated.Produce the starting torque of rotor by the formed magnetic field of the electric current in winding a-a ', and after the rotor initial start, keep the backward rotation of rotor by the formed magnetic field of the electric current that among winding a-a ', flows along direction from b ' to b.So, reversible motor rotation on oppositely.
Simultaneously, preferably, winding ratio and sectional area ratio (or diameter of wire than) rotate and the efficient of counter-rotational reversible motor and starting torque optimization and regulated in order to make at normal direction, and this is discussed below.
Preferably, the winding ratio of the normal direction rotation of two windings is (in the normal direction rotation, pass the number of conductors of not connecting of part slit/the pass quantity of the lead of connecting of part slit with working capacitor with working capacitor) be set in 0.71 to 0.98 the scope, and the backward rotation winding ratio of two windings (in reverse rotation, pass the quantity of the lead of not connecting of part slit/pass part slit with working capacitor connect with working capacitor the quantity of lead) be set at the inverse of normal direction winding ratio.
Preferably, the sectional area ratio of the normal direction rotation of two windings is (in the normal direction rotation, the sectional area of the winding of the sectional area of the winding of connecting/connect not) in the scope of 1.04-2.75 with working capacitor with working capacitor, and the backward rotation sectional area ratio of two windings (in reverse rotation, not the sectional area of the winding of the sectional area of the winding of connecting with working capacitor/connect with working capacitor) is the inverse of the long-pending ratio of normal direction spin crossover.
When the cross section of the lead of two windings when being circular, sectional area ratio can be expressed as the diameter of wire ratio.In other words, when the cross section of the lead of two windings when being circular, preferably, the normal direction rotation diameter of wire of two windings is than (in the normal direction rotation, the diameter of wire of the winding of the diameter of wire of the winding of connecting/connect not) in the scope of 1.02-1.66 with working capacitor with working capacitor, and the reverse rotation diameter of wire of two windings is the inverse of normal direction rotation diameter of wire ratio than (in reverse rotation, not the diameter of wire of the winding of the diameter of wire of the winding of connecting with working capacitor/connect with working capacitor).
When falling into above-mentioned scope in respectively, reversible motor presents the starting torque of abundance and suitable efficient in normal direction rotation and reverse rotation when winding ratio and sectional area ratio (or diameter of wire than).Be approximately 83% owing to have the efficient of the reversible motor of above-mentioned winding ratio and sectional area ratio under normal direction rotation situation, and be approximately 80% under reverse rotation condition, therefore, this efficient is acceptable for commercial Application.
In the reversible motor of this embodiment, normal direction rotation winding ratio and reverse rotation winding ratio can only be reciprocal relation in view of the structure of stator.
In contrast, describe reversible motor according to another embodiment of the present invention with reference to the accompanying drawings, wherein, normal direction rotation winding ratio and reverse rotation winding ratio can be regulated independently of one another.
Fig. 5 illustrates the circuit of another preferred embodiment ground reversible motor according to the present invention, shows the winding and the working capacitor that are connected on the power supply.
With reference to Fig. 5, reversible motor comprises: two winding a-a ' and b-b ' have a branch electrodes (a " or b ") on each winding; Starting device, three 3 type switches 410,430 and 450 are used for selectivity and connect two windings, branch electrodes and starting devices; And the control device (not shown), be used to control three switches 410,430 and 450.Though starting device can be capacitor, switch or their combination, it is that the hypothesis of capacitor provides that description after this is based on starting device.Though control device can be control circuit or microcomputer, it is that this hypothesis of microcomputer provides that description after this is based on control device.
One end c of the terminal 411 of switch 410 and working capacitor is connected on the power supply, and the other end c ' of working capacitor is connected on the terminal 431 of switch 430.The terminal 415 of switch 410 is connected on the end a of winding a-a ', and the terminal 438 of switch 430 is connected to the branch electrodes a of winding a-a ' " on, and the terminal 435 of switch 430 is connected to the branch electrodes b of winding b-b ' " on.The terminal 458 of switch 450 is connected on the end b of winding b-b ', and the terminal 418 of switch 410 and the terminal 455 of switch 450 are connected on the other end b ' of winding b-b '.Terminal 451 ground connection of the other end a ' of winding a-a ' and switch 450.
To explain that reversible motor goes up the situation of rotation in a direction (below be called normal direction).
In order to rotate reversible motor on normal direction, microcomputer is connected to the terminal 411 of switch 410 on the terminal 415, the terminal 431 of switch 430 is connected on the terminal 435, and the terminal 451 of switch 450 is connected on the terminal 455.
Then, the winding of reversible motor and working capacitor are connected on the power supply as shown in Figure 6A, make electric current flow to two windings along the direction shown in Fig. 6 A.Electric current flows and electric current mobile identical to a position of two windings of the stator of unidirectional motor shown in Figure 2 and working capacitor to a position of two windings of the stator of the reversible motor shown in Fig. 6 A and working capacitor, except in the part of winding b-b ' (b-b " winding), do not have electric current mobile.Therefore, reversible motor rotates on normal direction.
Will be explained in reversible motor along with the described side situation during (below be called oppositely) rotation in the opposite direction.
For rotation on oppositely, microcomputer is connected to the terminal 411 of switch 410 on the terminal 418, the terminal 431 of switch 430 is connected on the terminal 438, and the terminal 451 of switch 450 is connected on the terminal 458.
Then, the winding of reversible motor and working capacitor are connected on the power supply shown in Fig. 6 B.So shown in Fig. 6 B, electric current is along flowing (at winding a-a " in do not have electric current to flow) from a " to the winding a of a ' direction at the reversible motor stator "-a ', working capacitor and winding a " a ' connect.And electric current is interior mobile at the winding b-b ' of the stator of reversible motor along the direction from b ' to b.Electric current mobile in two windings of the electric current that flows in a position of two windings of the reversible motor stator shown in Fig. 6 B and working capacitor and the reversible motor stator under the reverse rotation condition shown in Fig. 4 B and position of working capacitor is identical, except (not having electric current flows; therefore reversible motor rotation on oppositely among the a-a ") at a part of winding of winding a-a '.
In this embodiment of reversible motor of the present invention, because electrode each a bit punish out from two windings of stator, and electric energy optionally is provided to two windings and branch electrodes, and a part of winding depends on direction of rotation and do not use.Therefore, should be noted that after this winding ratio of describing is not each a number of conductors in two windings that are wrapped on the stator slit, but the quantity of the lead of two windings that the actual influence motor rotates, the i.e. ratio of the number of conductors of two of the actual flow electric current windings wherein.
In view of this point, will the winding ratio of this embodiment of reversible motor of the present invention be discussed.
Branch out two electrodes by desired point from two windings, the normal direction rotation winding ratio of two windings is (in normal rotation, pass the quantity of the lead of not connecting of part slit/the pass quantity of the lead of connecting of part slit with working capacitor with working capacitor) and the reverse rotation winding ratio of two windings (in reverse rotation, passing the quantity of the lead of not connecting of part slit/the pass quantity of the lead of connecting of part slit) with working capacitor with working capacitor can be regulated independently of one another.
Simultaneously, efficient and starting torque for the reversible motor of optimizing present embodiment, preferably, normal direction rotation winding ratio and reverse rotation winding ratio equate, and so some branch of electrode from two windings makes normal direction rotation winding ratio and reverse rotation winding ratio fall in the scope of winding ratio of prior art unidirectional motor (1.1-1.6).
In addition, preferably, the normal direction spin crossover of two windings is long-pending than (in the normal direction rotation, the sectional area of the winding of the sectional area of the winding of connecting/connect not) falls on the scope 1.04-2.75 with working capacitor with working capacitor, and the reverse rotation sectional area ratio of two windings (in reverse rotation, not the sectional area of the winding of the sectional area of the winding of connecting with working capacitor/connect with working capacitor) is the inverse of the long-pending ratio of normal direction spin crossover.
As previously explained, when the cross section of the lead of two windings when being circular, sectional area ratio can be expressed as the diameter of wire ratio, preferably, the normal direction rotation diameter of wire of two windings is than (in the normal direction rotation, the diameter of wire of the winding of the diameter of wire of the winding of connecting/connect not) in scope 1.02-1.66 with working capacitor with working capacitor, and the reverse rotation diameter of wire of two windings is the inverse of normal direction rotation diameter of wire ratio than (in reverse rotation, not the diameter of wire of the winding of the diameter of wire of the winding of connecting with working capacitor/connect with working capacitor).
Industrial applicability
The industrial applicability of reversible motor of the present invention will be explained.
At first, because reversible motor of the present invention can save mechanical device, such as clutch, such as The equipment of using described motor of compressor can reduce volume, and eliminates from clutch originally The noise of body.
The second, by winding ratio and sectional area ratio (or the diameter of wire of suitable adjusting reversible motor Than), reversible motor of the present invention rotates and counter-rotates to provide for normal direction and is suitable for The efficient of commercial Application.
The 3rd, reversible motor of the present invention preferably is applied on the compressor with variable.
Claims (7)
1. reversible motor comprises:
Stator with two windings;
With a starting device of connecting in two windings; And
Being used for selectivity provides the switch of electric energy to two windings,
Wherein, switch optionally connects, make that the sense of current in two windings one is reverse, and starting device is connected in two windings another, be used for making motor reverse, described two windings have the normal direction rotation winding ratio that falls in the 0.71-0.98 scope, and the reverse rotation winding ratio that rotates the inverse of winding ratio for normal direction.
2. reversible motor as claimed in claim 1, wherein, starting device is at least one capacitor.
3. reversible motor as claimed in claim 1, wherein, starting device is at least one switch.
4. reversible motor as claimed in claim 1, wherein, starting device is the combination of at least one capacitor and at least one switch.
5. reversible motor as claimed in claim 1, wherein, two windings have the normal direction rotation sectional area of wire ratio that falls in the 1.04-2.75 scope, and the reverse rotation sectional area of wire ratio that rotates the inverse of sectional area of wire ratio for normal direction.
6. reversible motor as claimed in claim 1, wherein, two windings have the normal direction rotation diameter of wire ratio that falls in the 1.02-1.66 scope, and the reverse rotation diameter of wire ratio that rotates the inverse of diameter of wire ratio for normal direction.
7. positive displacement compressor that has as each described reversible motor in the claim 1 to 6.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2001/54164 | 2001-09-04 | ||
| KR10-2001-0054164A KR100451727B1 (en) | 2001-09-04 | 2001-09-04 | Motor for compressor having variable capacity |
| KR2001/56244 | 2001-09-12 | ||
| KR10-2001-0056244A KR100425101B1 (en) | 2001-09-12 | 2001-09-12 | Motor for variable capacity type compressor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101961167A Division CN101183819B (en) | 2001-09-04 | 2002-05-31 | Reversible motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1586029A CN1586029A (en) | 2005-02-23 |
| CN100403628C true CN100403628C (en) | 2008-07-16 |
Family
ID=26639325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028222318A Expired - Fee Related CN100403628C (en) | 2001-09-04 | 2002-05-31 | Reversible motor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7023156B2 (en) |
| EP (1) | EP1423904B1 (en) |
| CN (1) | CN100403628C (en) |
| AU (1) | AU2002306128B2 (en) |
| WO (1) | WO2003021751A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8193755B2 (en) * | 2006-06-13 | 2012-06-05 | Linak A/S | Actuator |
| TW200918117A (en) * | 2007-10-29 | 2009-05-01 | zhi-cheng Ruan | Damping device of sports equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60241782A (en) * | 1984-05-14 | 1985-11-30 | Fuji Xerox Co Ltd | Rotating direction converter for single-phase induction motor |
| EP0597370A2 (en) * | 1992-11-10 | 1994-05-18 | SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT | Machine for comminuting materials or for pressing with electric motor. |
| JPH0723551A (en) * | 1993-06-30 | 1995-01-24 | Sanyo Electric Co Ltd | Forward/reverse rotating unit for capacitor run single phase motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1247634B (en) * | 1990-12-05 | 1994-12-28 | Zanussi Elettrodomestici | DRIVE SYSTEM FOR HYDRAULIC PUMP WITH ROTARY SEAL |
| DE19642097A1 (en) * | 1996-10-12 | 1998-04-16 | Leybold Vakuum Gmbh | Drive for oil-tight vacuum pump, esp. a rotary disc vacuum pump |
| US6016049A (en) * | 1998-06-24 | 2000-01-18 | Teleflex Incorporated | Capacitive supercharger for electric shift mechanism |
| US6175208B1 (en) * | 1999-10-01 | 2001-01-16 | Emerson Electric Co. | High efficiency permanent split capacitor motor for driving a compressor |
-
2002
- 2002-05-31 WO PCT/KR2002/001040 patent/WO2003021751A1/en not_active Application Discontinuation
- 2002-05-31 EP EP02733547A patent/EP1423904B1/en not_active Expired - Fee Related
- 2002-05-31 US US10/488,510 patent/US7023156B2/en not_active Expired - Fee Related
- 2002-05-31 AU AU2002306128A patent/AU2002306128B2/en not_active Ceased
- 2002-05-31 CN CNB028222318A patent/CN100403628C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60241782A (en) * | 1984-05-14 | 1985-11-30 | Fuji Xerox Co Ltd | Rotating direction converter for single-phase induction motor |
| EP0597370A2 (en) * | 1992-11-10 | 1994-05-18 | SCHLEICHER & Co. INTERNATIONAL AKTIENGESELLSCHAFT | Machine for comminuting materials or for pressing with electric motor. |
| JPH0723551A (en) * | 1993-06-30 | 1995-01-24 | Sanyo Electric Co Ltd | Forward/reverse rotating unit for capacitor run single phase motor |
Also Published As
| Publication number | Publication date |
|---|---|
| US7023156B2 (en) | 2006-04-04 |
| EP1423904A1 (en) | 2004-06-02 |
| WO2003021751A1 (en) | 2003-03-13 |
| US20040257015A1 (en) | 2004-12-23 |
| AU2002306128B2 (en) | 2005-11-24 |
| CN1586029A (en) | 2005-02-23 |
| EP1423904B1 (en) | 2011-08-10 |
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